Nut-lock.



No. 635,5I9. Patentd Oct. 24; I899. B. F. SMITH.

N U T L 0 C K (Application filed Oct. 1, 1898.)

(No Model.)

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NITED STATES BENJAMIN F. SMITH, OF WIOI-IITA, KANSAS, ASSSIGNOR OF TYVO-THIRDS TO JAMES S. CAMPBELL, OF SAME PLACE.

NUT-LOCK.

SPECIFICATION forming part of Letters Patent No. 635,519, dated October 24, 1899.

Application filed October 1, 1898.

To all whom it may concern:

Be it known that I, BENJAMIN F. SMITH, a citizen of the United States of America, residin g at \Vichita, in the county of Sedgwick and State of Kansas, have invented certain new and useful Improvements in Nut-Locks, of which the following is a Specification, reference being had therein to the accompanying drawings, and the figures of referencethereon, forminga part of. this specification, in which Figure l is a perspective view of my improved nut-lock applied to a railway-rail joint. Fig. 2 is a like view of a portion of the expansion spring-plate out in two at one of the boltholes. Fig. 3 is a side view of said expansionplate. Fig. 4 is an edge view of the same. Fig. 5 is a sectional view of a rail-joint with the expansion-plate attached and the nut-lock ready to be placed over the heads of the bolts. Fig. 6 is a perspective view of the nut-lock.

This invention relates to certain improvements in nut-locks and expansion-plates; and it consists in the peculiar construction and operation of the same; and the object of my invention is to produce a nut-lock that will hold the nut from turning 011 the bolt and at the same time yield to the expansion and contraction of the iron caused by heat and cold, thus always keeping the joint tight, which will prevent the wearing away of the rail, fishplate, and bolt.

Referring to the drawings, 1 represents a railway-rail. 2 represents a fish-plate. 3 represents a spring expansion-plate. 4 represents a nut-lock. 5 represents a corrugated ridge along the line of the bolt-heads to prevent the same from turning on the bolt. 6 represents holes in said corrugated ridge to allow the lock 5 to pass over the nuts 8. 7 represents notches in said nut-lock in which to put the spikes 14 for securing said lock to Serial No. 692,403. (No model.)

the ties. 9 represents said spring expansionplate, made corrugated transversely, so that it will touch the fish-plate at the points 10 and the nuts 8 at the points 11. 13 represents points out out from the edge of the .holes 12 to prevent the nut from turning should the nut-lock 4 be removed.

The spring 3 is for the purpose of yielding to the expansion and contraction of the bolt 7", and to do this the nuts 8 are drawn up on the bolts 7' enough to compress the spring about one-half between the nuts 8 and the fish plate 2. Said spring is of sufficient strength to hold all the parts of the joint tight, thus preventing the wearing of the rail, fish-plate, and bolt.

The nut-lock is made with the corrugation, so that the said lock can be made of much lighter material and give sufficient strength and surface aroundthe nut to prevent said look from Working between the nut and spring, and as said nut-lock is a positive lock against the nut turning and the spring will always yield with the expansion and contrac= tion of the bolt the two combined will keep the joint always tight.

Having thus described my invention, what Iclaim as new and useful, and desire to secure by Letters Patent, is as follows:

A nut-lock consisting of the combination of a trans versely-corrugated spring having openings therein, bolts passing through said openings, a longitudinally-corrugated plate with square openings adapted to surround the nuts of said bolts, and means for securing said plate to a railway-rail.

BENJAMIN r. SMITH. Witnesses:

THOMAS O. I-Ioss, C. B. QUINCY. 

